Re: [PATCH v4.1 3/3] arm64: dts: imx8mq: add mipi csi phy and csi bridge descriptions
From: Martin Kepplinger <hidden>
Date: 2021-06-15 08:17:20
Also in:
linux-devicetree, linux-media, linux-staging, lkml, phone-devel
Am Dienstag, dem 15.06.2021 um 01:11 +0300 schrieb Laurent Pinchart:
Hi Martin, Thank you for the patch. On Mon, Jun 14, 2021 at 02:25:17PM +0200, Martin Kepplinger wrote:quoted
Describe the 2 available CSI interfaces on the i.MX8MQ with the MIPI-CSI2 receiver and the CSI Bridge that provides the user buffers, where the existing driver can directly be used. An image sensor is to be connected to the MIPIs' second port, described in board files. Signed-off-by: Martin Kepplinger <redacted> --- sorry, the csi compatible addition suggested by Marco was missing in v4 3/3. here is 3/3 updated. arch/arm64/boot/dts/freescale/imx8mq.dtsi | 102 ++++++++++++++++++++++ 1 file changed, 102 insertions(+)diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsib/arch/arm64/boot/dts/freescale/imx8mq.dtsi index 91df9c5350ae..fa83e8294b20 100644--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi@@ -1099,6 +1099,108 @@ uart4: serial@30a60000 {status = "disabled"; }; + mipi_csi1: csi@30a70000 { + compatible = "fsl,imx8mq-mipi- csi2"; + reg = <0x30a70000 0x1000>; + clocks = <&clk IMX8MQ_CLK_CSI1_CORE>, + <&clk IMX8MQ_CLK_CSI1_ESC>, + <&clk IMX8MQ_CLK_CSI1_PHY_REF>, + <&clk IMX8MQ_CLK_CLKO2>; + clock-names = "core", "esc", "pxl", "clko2";I can't figure out what the clko2 clock is used for based on the datasheet. It seems to be a clock output by the SoC on GPIO1_IO15, and doesn't seem to belong here.
oh, no it doesn't, I'm sorry, that was just a hack that I forgot about! That clock is only used by the sensor I'm using -.- I'll remove it here. thanks a lot for looking closely.
Regarding core, esc and pix, do these clock correspond to the clk, clk_esc and clk_ui listed in table 13-36 (section 13.8.3.3.1 "RX Local Interface Description") of the TRM ? If so, should they be renamed accordingly, to either "clk", "clk_esc" and "clk_ui", or, if we want to drop the prefixes, "core", "esc" and "ui" ?
yes, I think so.
quoted
+ assigned-clocks = <&clk IMX8MQ_CLK_CSI1_CORE>, + <&clk IMX8MQ_CLK_CSI1_PHY_REF>, + <&clk IMX8MQ_CLK_CSI1_ESC>; + assigned-clock-rates = <266000000>, <333000000>, <66000000>; + assigned-clock-parents = <&clk IMX8MQ_SYS1_PLL_266M>, + <&clk IMX8MQ_SYS2_PLL_1000M>, + <&clk IMX8MQ_SYS1_PLL_800M>; + power-domains = <&pgc_mipi_csi1>; + resets = <&src>;The src node has #reset-cells set to 1, I think you're missing something here.
yes, thank you!
quoted
+ fsl,mipi-phy-gpr = <&iomuxc_gpr 0x88>; + interconnects = <&noc IMX8MQ_ICM_CSI1 &noc IMX8MQ_ICS_DRAM>; + interconnect-names = "dram"; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + csi1_mipi_ep: endpoint { + remote- endpoint = <&csi1_ep>; + }; + }; + }; + }; + + csi1: csi@30a90000 { + compatible = "fsl,imx8mq-csi", "fsl,imx7-csi"; + reg = <0x30a90000 0x10000>; + interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk IMX8MQ_CLK_CSI1_ROOT>; + clock-names = "mclk"; + status = "disabled"; + + port { + csi1_ep: endpoint { + remote-endpoint = <&csi1_mipi_ep>; + }; + }; + }; + + mipi_csi2: csi@30b60000 { + compatible = "fsl,imx8mq-mipi- csi2"; + reg = <0x30b60000 0x1000>; + clocks = <&clk IMX8MQ_CLK_CSI2_CORE>, + <&clk IMX8MQ_CLK_CSI2_ESC>, + <&clk IMX8MQ_CLK_CSI2_PHY_REF>, + <&clk IMX8MQ_CLK_CLKO2>; + clock-names = "core", "esc", "pxl", "clko2"; + assigned-clocks = <&clk IMX8MQ_CLK_CSI2_CORE>, + <&clk IMX8MQ_CLK_CSI2_PHY_REF>, + <&clk IMX8MQ_CLK_CSI2_ESC>; + assigned-clock-rates = <266000000>, <333000000>, <66000000>; + assigned-clock-parents = <&clk IMX8MQ_SYS1_PLL_266M>, + <&clk IMX8MQ_SYS2_PLL_1000M>, + <&clk IMX8MQ_SYS1_PLL_800M>; + power-domains = <&pgc_mipi_csi2>; + resets = <&src>; + fsl,mipi-phy-gpr = <&iomuxc_gpr 0xa4>; + interconnects = <&noc IMX8MQ_ICM_CSI2 &noc IMX8MQ_ICS_DRAM>; + interconnect-names = "dram"; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + csi2_mipi_ep: endpoint { + remote- endpoint = <&csi2_ep>; + }; + }; + }; + }; + + csi2: csi@30b80000 { + compatible = "fsl,imx8mq-csi", "fsl,imx7-csi"; + reg = <0x30b80000 0x10000>; + interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk IMX8MQ_CLK_CSI2_ROOT>; + clock-names = "mclk"; + status = "disabled"; + + port { + csi2_ep: endpoint { + remote-endpoint = <&csi2_mipi_ep>; + }; + }; + }; + mu: mailbox@30aa0000 { compatible = "fsl,imx8mq-mu", "fsl,imx6sx-mu"; reg = <0x30aa0000 0x10000>;
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